What is the difference between Null Modem cable and Straight Through Cable...???

What is the difference between Null Modem cable and Straight Through Cable...???
             The null modem cable is frequently called a Crossover cable. It is used to allow two serial Data Terminal Equipment (DTE) devices to communicate with each other without using a modem or a Data Communications Equipment (DCE)...

What is the difference between DCE and DTE ???

What is the difference between DCE and DTE  ???
           DTE is the source or destination of digital data, while DCE is the equipment used to transmit or receive the data. DTE stands for Data Terminal Equipment, while DCE stands for Data Communications Equipment.      ...